Miter-box.



G. sWANsoN.

MITBR BOX.

APPLIOATlON FILED MAY 19, 1913.

1,096,072. Patented May 12, 1914.

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G. SWAN SON.

MITBR BOX.

,APPLICATION FILED 'MAY 19, 191.

1,096,072; 1mi-,9111611 May12,1914.

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G. SWANSON.

' MITBR BOX.

APPLIOATION FILED MAY 19, 191s.

Patented May 12,1914.

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6% M @agito/*716g UNITED STATES PATENT OFFICE.

GUST SWANSON, 0F ROCKFORD, ILLINOIS.

MITER-BOX.

To all yicy/ont it may concern:

Be it known that I, GUsr SwANsoN, a former subject of the King of Sweden, who have declared my intention of becoming a citizen of the United States, and a resident of the city of Rockford, county of Tinnebago, and State of Illinois, have invented certain new and useful Improvements in Miter-Boxes, of which the following is a specification.

My invention relates to miter boxes and has for its object the provision of an improved miter box so arranged as to permit the formation of any desired angle.

A further object of the invention is to provide an improved construction of this nature which is simple and efficient in use.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which, Y

Figure 1 is a top plan view of a miter box embodying my invention, Fig. 2, a front elevation of the same, Fig. 3, a section taken on line a-a of Fig. 2, Fig. 4, a section taken on line o o of Fig. 3, Fig. 5, a horizontal detail section taken through the saw and its guides and illustrating means for automatically feeding the saw to its work, said section being taken substantially on line c-c of Fig. 4, Fig. 6, a section taken on line (Z-Z of Fig. 4, Fig. 7, a detail horizontal section taken through one end of the supporting table and showing a table extension in extended position, Fig. 8, a section taken on line e-e of Fig. 7, Fig. 9, a perspective view of a clamp employed in the construction, and Fig. 10 is a fragmental section taken on a plane parallel with the plane indicated by line a-a in Fig. 2.

The preferred form of construction as illustrated in the accompanying drawings comprises a suitable support and table 1 having a central V-shaped notch 1 therein and also provided at the rear with a guidewall 2 which is also provided with a central V-shaped notch 2', as indicated. Mounted centrally under the table 1 is a swinging arm 3 which is pivoted to said table at 4 directly beneath notch 2, as shown. Arm 3 carries a locking dog 5 which is adapted to engage teeth 6 in the edge of a graduated plate 7 arranged in table 1, said arm carry- Speccation of Letters Patent.

Application filed May 19, 1913.

Patented May 12, 1914.

Serial No. 768,520.

mounted above table 1 and carries a depend- Y ing arm 12 at the front which is provided with a locking dog 13 cooperating with teeth 14 in the lower edge of a segmental plate 15 arranged at the front of arm 3. Dog 13 is yieldingly held in position by means of a spring 13 and is operated by a lever 16 having cam slots 17 engaging lateral projections 17 on dog 13, and so arranged as to throw said dog out of engagement with teeth 14 when desired. By this Y v arrangement, it will be observed that rock Y l shaft 11 can be adjusted to different angular positions as desired.

Rock shaft 11 carries two upstanding hollow posts 18 in each of which a post 19 is mounted to slide vertically. Each of the posts 19 is provided at its top with a slot 20 and in its lowerv portion with a slot 20 adapted to permit the passage of a saw 21, each of the posts 18 being also similarly slotted to permit the passage of said saw. Each of the posts 19 carries a spring member 22 mortised in and bent around the top end thereof. Near the lower end of each spring 22 is secured al pin 23 frictionally engaging and slidably mounted in a groove 24 formed in the side of its corresponding post 18. The frictional contact between said pins 23 and grooves 24 being sufficient to lock the posts 19 against telescoping movement in posts 18, due to the tension of springs 22.

On the inner sides of springs 22 are provided members 25 projecting into slots 20', and on the saw 21 are formed members 26 adapted to engage members 25 just before the completion of the forward movement of the saw and press the springs 22 outwardly freeing the pins 23 from their engagement with the slots 24, thereby allowing the posts 19 and saw 21 to be moved downwardly by gravity at the end of each cutting stroke into contact with the material which is being sawed. This device is particularly adapted for cutting soft material since such material is often torn thereby making a rough cut when the saw is free to be fed in the material during the cutting stroke.

Each of the springs 22 carries a gage 27 comprising a member around such springs and having' a set screw by 'which the gage is adjusted longitudinally of such springs. Said gages are adapted to engage the tops of posts 18 to limit the downward movement or telescoping of posts 19 and saw 21 to limitthe depth oit' the sayv cut.

Arranged at each end of table l is a table extension 28 Vcarrying atable portion 29 which is coplanar with the top of table 1. Each of the table extensions 28 carries a rigid arm 30 and a pivoted arm 3l extending `through slots provided in the corresponding end of table l, and arm 30 carries a pivoted locking arm 82 provided at its free end with lugs 33 adapted to engage notches 34 in the end of arm 3l. By this arrangement, arms 30 and 3l serve as guides for the extension of the members 28 and arm 32 acts is an automatic stop against total removal of said extensions. I/Vhen the eXtensions 28 are not in use, the arms 3l and 32 may be ilolded as indicated in dotted lines in Fig. l, so as to permit of adjustments of arm 3. Each of the extensions 28 carries a pivoted clamp 35 in which is mounted a combined gage and clamping member 86, as shown, said clamping member being adapted to either clamp the Work against Wall 2 or serve as a gage for articles on the table.

IVhile I have illust-rated and described the preferred form of construction tor carrying my invention into eiiect, this is capable of variation and modification Without departing from the spirit of the invention. I, therefore, do not Wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modiiications as come Within the scope of the appended claims.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. The combination of a supporting table; two sawv guides carried by said table, each guide comprising tWo telesco-ping sections having sa7 guide slots therethrough and the outermost of each section having a longitudinal groove therein; a spring secured to the innermost of each section of said guides and extending over one of said grooves; a pin on each spring engaging one of said grooves frictionally locking the seetions of said guidesagainst telescoping action;` a member on eachof said springs and extending into said guide slots; a san7 operatively mounted in said guideV slots; and members on said saw engaging said first mentioned members and unlocking the sections of said guides for telescop'ing action, substantially as described.

2. The combination of a supporting table having two openings in its ends beneath the top thereof; anextension table member having rails sliding in said openings; ainda locking bar hinged'to the inner end of one of said rails and adapted to automatically engage the othery rail upon withdrawal of said rails7 substantially als described.

3. The combination of a supportingvtable having two openings in its ends beneath the top thereof; an extension table member at the end of said table; a railrigidly secured to said extension and slidably mounted in one of said openings in said table end; aiseeond rail pivotally secured tovsaid extension and slidably mounted in the otheropening in said table end7 there being arecess inthe free end 0i' said last mentioned rail; and a locking bar pivoted to said .rst mentioned rail and engaging the, recess in said last mentioned rail, substantially as described.

In testimony whereof I have signed my name to this specification in the presence ot tivo subscribing Witnesses. p y

GUST SWANSON.

Vitnesses: 4

L. QSANDELL, FRANK HOGMAN.

Copies of this patent may be obtained for ve cents each, by addressing the (ioniiniss'iioneriofy Patents. Washington, D. C. 

